A mysterious line of giant footprints has emerged in eastern France, preserved for millions of years. At first glance they seem simple, yet researchers say they hold clues that go far beyond their shape. A 508-foot trail of fossilized dinosaur footprints discovered in the Jura Mountains has been identified as the longest known sauropod trackway in the world. The site, located near the village of Plagne, gives the scientists a rare and continuous reco... [2614 chars]
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